Carbon Stocks of Individual Trees in African Drylands: Allometry and Output Data

Description

This dataset provides allometrically-estimated carbon stocks of 9,947,310,221 tree crowns derived from 50-cm resolution satellite images within the 0 to 1000 mm/year precipitation zone of Africa north of the equator and south of the Sahara Desert. These data are presented in GeoPackage (*.gpkg) format and are summarized in Cloud-Optimized GeoTIFF (COG) format. An interactive viewer application developed to display these carbon estimates at the individual tree level across the study area is available at: https://trees.pgc.umn.edu/app. The analysis utilized 326,523 Maxar multispectral satellite images collected between 2002 to 2021 for the early dry season months of November to March to identify tree crowns. Metadata from satellite image processing across the study area are presented in Shapefile (*.shp) format. Additionally, field measurements from destructive harvests used to derive allometry equations are contained in comma-separated values (*.csv) files. These data demonstrate a new tool for studying discrete semi-arid carbon stocks at the tree level with immediate applications provided by the viewer application. Uncertainty of carbon estimates are +/- 19.8%.

Resources

Name Format Description Link
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F2117
22 Wood, foliage and root carbon of 9,947,310,221 trees (> 3 m^2 in crown area) across 9,685,324 km^2 were mapped. a, The study area covered the southern Sahara, the Sahel, and the northern Sudanian zone of Africa and shows the aggregated tree carbon density and carbon (foliage + wood + root) per hectare. The isohyets mark the 150, 300, 600, and 1000 mm/year rainfall zones (from north to south). b, An example of the carbon stock of each tree for an agroforestry area in Senegal. Figure from Tucker et al. (2023). https://daac.ornl.gov/VEGETATION/guides/Semi-Arid_Tree_Carbon_50cm_Fig1.jpg
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/daacdata/global_vegetation/Semi-Arid_Tree_Carbon_50cm/
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/VEGETATION/guides/Semi-Arid_Tree_Carbon_50cm.html
33 Carbon Stocks of Individual Trees in African Drylands: Allometry and Output Data: Data_viewer_description_Carbon_Stocks_of_Indiv_Trees.pdf https://data.ornldaac.earthdata.nasa.gov/public/global_vegetation/Semi-Arid_Tree_Carbon_50cm/comp/Data_viewer_description_Carbon_Stocks_of_Indiv_Trees.pdf
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/2117
33 Carbon Stocks of Individual Trees in African Drylands: Allometry and Output Data: Semi-Arid_Tree_Carbon_50cm.pdf https://data.ornldaac.earthdata.nasa.gov/public/global_vegetation/Semi-Arid_Tree_Carbon_50cm/comp/Semi-Arid_Tree_Carbon_50cm.pdf

Tags

  • biosphere
  • vegetation
  • earth-science

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